/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:21:29,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:21:29,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:21:29,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:21:29,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:21:29,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:21:29,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:21:29,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:21:29,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:21:29,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:21:29,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:21:29,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:21:29,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:21:29,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:21:29,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:21:29,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:21:29,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:21:29,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:21:29,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:21:29,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:21:29,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:21:29,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:21:29,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:21:29,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:21:29,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:21:29,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:21:29,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:21:29,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:21:29,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:21:29,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:21:29,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:21:29,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:21:29,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:21:29,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:21:29,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:21:29,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:21:29,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:21:29,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:21:29,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:21:29,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:21:29,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:21:29,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:21:29,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:21:29,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:21:29,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:21:29,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:21:29,620 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:21:29,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:21:29,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:21:29,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:21:29,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:21:29,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:21:29,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:21:29,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:21:29,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:21:29,622 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:21:29,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:21:29,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:21:29,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:21:29,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:21:29,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:21:29,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:21:29,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:21:29,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:21:29,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:21:29,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:21:29,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:21:29,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:21:29,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:21:29,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:21:29,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:21:29,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:21:30,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:21:30,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:21:30,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:21:30,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:21:30,095 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:21:30,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 12:21:30,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6634aa75/aa5bdf9bed814360b9bbf701ef3f18a8/FLAGce291dd2a [2020-09-25 12:21:30,871 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:21:30,872 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 12:21:30,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6634aa75/aa5bdf9bed814360b9bbf701ef3f18a8/FLAGce291dd2a [2020-09-25 12:21:31,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6634aa75/aa5bdf9bed814360b9bbf701ef3f18a8 [2020-09-25 12:21:31,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:21:31,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:21:31,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:31,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:21:31,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:21:31,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:31" (1/1) ... [2020-09-25 12:21:31,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:31, skipping insertion in model container [2020-09-25 12:21:31,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:31" (1/1) ... [2020-09-25 12:21:31,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:21:31,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:21:31,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:31,703 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:21:31,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:31,930 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:21:31,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:31 WrapperNode [2020-09-25 12:21:31,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:31,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:21:31,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:21:31,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:21:31,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:31" (1/1) ... [2020-09-25 12:21:31,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:31" (1/1) ... [2020-09-25 12:21:31,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:31" (1/1) ... [2020-09-25 12:21:31,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:31" (1/1) ... [2020-09-25 12:21:32,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:31" (1/1) ... [2020-09-25 12:21:32,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:31" (1/1) ... [2020-09-25 12:21:32,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:31" (1/1) ... [2020-09-25 12:21:32,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:21:32,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:21:32,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:21:32,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:21:32,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:21:32,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:21:32,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:21:32,131 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:21:32,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:21:32,132 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:21:32,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:21:32,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:21:32,132 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:21:32,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:21:32,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:21:32,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:21:33,522 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:21:33,522 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:21:33,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:33 BoogieIcfgContainer [2020-09-25 12:21:33,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:21:33,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:21:33,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:21:33,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:21:33,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:21:31" (1/3) ... [2020-09-25 12:21:33,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f7315f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:33, skipping insertion in model container [2020-09-25 12:21:33,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:31" (2/3) ... [2020-09-25 12:21:33,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f7315f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:33, skipping insertion in model container [2020-09-25 12:21:33,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:33" (3/3) ... [2020-09-25 12:21:33,546 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-09-25 12:21:33,558 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:21:33,572 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:21:33,595 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:21:33,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:21:33,638 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:21:33,638 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:21:33,638 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:21:33,638 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:21:33,638 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:21:33,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:21:33,639 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:21:33,671 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:21:33,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 12:21:33,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:33,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:33,695 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:33,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:33,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1760559547, now seen corresponding path program 1 times [2020-09-25 12:21:33,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:33,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766651903] [2020-09-25 12:21:33,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:34,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:34,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:34,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:35,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:38,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:38,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:38,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 12:21:38,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:21:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 12:21:39,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:39,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 12:21:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 12:21:39,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:21:39,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:39,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:39,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:39,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:39,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:39,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 12:21:39,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:39,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:39,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:21:39,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:21:39,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:39,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766651903] [2020-09-25 12:21:39,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:21:39,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:21:39,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253359278] [2020-09-25 12:21:39,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:39,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:39,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:39,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:39,422 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 12:21:42,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:42,051 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 12:21:42,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:21:42,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-09-25 12:21:42,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:42,094 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 12:21:42,094 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 12:21:42,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:21:42,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 12:21:42,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 12:21:42,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:21:42,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 12:21:42,259 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 131 [2020-09-25 12:21:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:42,263 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 12:21:42,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:42,264 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 12:21:42,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 12:21:42,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:42,281 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:42,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:21:42,282 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:42,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:42,282 INFO L82 PathProgramCache]: Analyzing trace with hash 139765844, now seen corresponding path program 1 times [2020-09-25 12:21:42,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:42,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737378301] [2020-09-25 12:21:42,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:42,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:45,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:45,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:46,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:47,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 12:21:47,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:21:47,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 12:21:47,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:47,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:47,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:47,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 12:21:47,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 12:21:47,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:47,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:47,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:47,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:47,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:47,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:21:47,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:47,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:47,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:47,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:47,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:47,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:47,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:47,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:47,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:47,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:21:47,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:47,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:47,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:21:47,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:47,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737378301] [2020-09-25 12:21:47,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:47,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:47,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650923259] [2020-09-25 12:21:47,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:47,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:47,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:47,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:47,678 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 5 states. [2020-09-25 12:21:49,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:49,728 INFO L93 Difference]: Finished difference Result 1559 states and 1949 transitions. [2020-09-25 12:21:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:21:49,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-25 12:21:49,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:49,736 INFO L225 Difference]: With dead ends: 1559 [2020-09-25 12:21:49,736 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 12:21:49,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:21:49,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 12:21:49,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 889. [2020-09-25 12:21:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 12:21:49,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1118 transitions. [2020-09-25 12:21:49,771 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1118 transitions. Word has length 152 [2020-09-25 12:21:49,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:49,772 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1118 transitions. [2020-09-25 12:21:49,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:49,772 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1118 transitions. [2020-09-25 12:21:49,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 12:21:49,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:49,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:49,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:21:49,778 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:49,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:49,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1952467868, now seen corresponding path program 1 times [2020-09-25 12:21:49,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:49,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015972974] [2020-09-25 12:21:49,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:49,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:49,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:53,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:54,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:54,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 12:21:54,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:21:54,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 12:21:54,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:54,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:54,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:54,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 12:21:54,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 12:21:54,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:54,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:54,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:55,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:55,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:55,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:21:55,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:55,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:55,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:55,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:55,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:55,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:55,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:55,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:55,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:21:55,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:55,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 12:21:55,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:55,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:55,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:55,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:55,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:21:55,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:55,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015972974] [2020-09-25 12:21:55,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:55,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:21:55,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142341047] [2020-09-25 12:21:55,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:21:55,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:55,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:21:55,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:21:55,172 INFO L87 Difference]: Start difference. First operand 889 states and 1118 transitions. Second operand 6 states. [2020-09-25 12:21:57,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:57,910 INFO L93 Difference]: Finished difference Result 3052 states and 4089 transitions. [2020-09-25 12:21:57,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:21:57,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-25 12:21:57,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:57,938 INFO L225 Difference]: With dead ends: 3052 [2020-09-25 12:21:57,938 INFO L226 Difference]: Without dead ends: 2187 [2020-09-25 12:21:57,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:21:57,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2020-09-25 12:21:58,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 1949. [2020-09-25 12:21:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1949 states. [2020-09-25 12:21:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 2490 transitions. [2020-09-25 12:21:58,050 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 2490 transitions. Word has length 161 [2020-09-25 12:21:58,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:58,051 INFO L479 AbstractCegarLoop]: Abstraction has 1949 states and 2490 transitions. [2020-09-25 12:21:58,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:21:58,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 2490 transitions. [2020-09-25 12:21:58,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 12:21:58,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:58,065 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:58,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:21:58,073 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:58,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:58,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1399138779, now seen corresponding path program 1 times [2020-09-25 12:21:58,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:58,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479324706] [2020-09-25 12:21:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:58,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:00,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:01,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:01,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:03,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:03,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 12:22:03,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:22:03,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:22:03,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:03,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:22:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:22:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 12:22:03,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:03,576 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-09-25 12:22:03,808 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-09-25 12:22:03,976 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-09-25 12:22:04,128 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-09-25 12:22:04,259 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2020-09-25 12:22:04,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:04,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:04,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:04,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:04,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:04,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:22:04,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:04,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:04,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:04,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:04,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:22:04,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:04,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:04,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:04,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:04,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:04,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:22:04,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:22:04,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 12:22:04,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:04,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:04,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:04,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:04,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:22:04,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:04,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:22:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:04,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:04,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:04,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:04,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:22:04,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:22:04,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 12:22:04,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:04,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:04,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:22:04,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:04,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:22:04,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:05,116 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:22:05,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479324706] [2020-09-25 12:22:05,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:05,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 12:22:05,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83401624] [2020-09-25 12:22:05,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 12:22:05,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:05,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 12:22:05,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-09-25 12:22:05,119 INFO L87 Difference]: Start difference. First operand 1949 states and 2490 transitions. Second operand 20 states. [2020-09-25 12:22:07,342 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-25 12:22:07,563 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-25 12:22:07,898 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-09-25 12:22:08,225 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-09-25 12:22:08,522 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-09-25 12:22:08,933 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 113 [2020-09-25 12:22:09,480 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-25 12:22:09,798 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-09-25 12:22:10,270 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-09-25 12:22:10,831 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-09-25 12:22:11,471 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-09-25 12:22:11,982 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-09-25 12:22:12,198 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-25 12:22:12,332 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-09-25 12:22:12,834 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-09-25 12:22:13,352 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-09-25 12:22:13,941 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-09-25 12:22:14,354 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-09-25 12:22:14,536 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-25 12:22:15,097 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-09-25 12:22:15,549 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-09-25 12:22:15,818 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-09-25 12:22:16,367 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-09-25 12:22:16,541 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-09-25 12:22:16,864 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-09-25 12:22:17,492 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-09-25 12:22:18,032 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-09-25 12:22:18,489 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2020-09-25 12:22:18,998 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-09-25 12:22:20,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:20,008 INFO L93 Difference]: Finished difference Result 6131 states and 8067 transitions. [2020-09-25 12:22:20,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-09-25 12:22:20,013 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 189 [2020-09-25 12:22:20,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:20,041 INFO L225 Difference]: With dead ends: 6131 [2020-09-25 12:22:20,042 INFO L226 Difference]: Without dead ends: 4192 [2020-09-25 12:22:20,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1062, Invalid=2598, Unknown=0, NotChecked=0, Total=3660 [2020-09-25 12:22:20,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4192 states. [2020-09-25 12:22:20,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4192 to 3634. [2020-09-25 12:22:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3634 states. [2020-09-25 12:22:20,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 4529 transitions. [2020-09-25 12:22:20,218 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 4529 transitions. Word has length 189 [2020-09-25 12:22:20,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:20,219 INFO L479 AbstractCegarLoop]: Abstraction has 3634 states and 4529 transitions. [2020-09-25 12:22:20,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 12:22:20,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 4529 transitions. [2020-09-25 12:22:20,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 12:22:20,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:20,235 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:20,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:22:20,235 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:20,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:20,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1472131304, now seen corresponding path program 1 times [2020-09-25 12:22:20,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:20,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784600690] [2020-09-25 12:22:20,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:20,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:20,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:20,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking...